Automatic battery and charging system tester with motor-driven carbon pile loading

  • US 5,254,952 A
  • Filed: 08/29/1991
  • Issued: 10/19/1993
  • Est. Priority Date: 09/11/1989
  • Status: Expired due to Fees
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First Claim
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1. Apparatus for automatically loading a test circuit in accordance with a variable parameter thereof which varies with the load, comprising:

  • carbon pile electrical impedance means adapted to be connected in the test circuit for loading thereof;

    compression means coupled to said impedance means for varying the compression thereof and thereby effecting variation of the impedance thereof, said compression means including rotatable shaft means, and clamping means threadedly engaged with said shaft means and adapted for engagement with the carbon pile;

    motive means coupled to said compression means for driving same, said motive means being coupled to shaft means for rotating same thereby to move said clamping means relative to the carbon pile for varying the compression thereof;

    feedback means coupled to the test circuit for sensing the variable parameter and producing a parameter signal which is a function of the parameter;

    drive control means coupled to said motive means and to said feedback means and responsive to said parameter signal for automatically controlling the operation of said motive means to vary the impedance of said impedance means so as to regulate the parameter signal to a predetermined value; and

    timing means coupled to said drive control means for selectively adjusting the time period during which said predetermined value is maintained.

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